Yellow is a little stronger reflector for the evening use. However, can be used for day. Highlight under your eyes, wrinkles, and in the nasal labial fold (smile line area) reflecting more light to achieve a vibrant healthier, youthful glow. Alleviates shadows from depressions, and under eye circles. For a younger, healthier appearance.Learn the techniques of Highlight and Shading that Professionals like Dan Read utilize to make a face look up to 25 years younger without cosmetic surgery. Dan Read's “Enhance and Preserve” DVD.